pageAction.isShown() 编辑

Returns true if the page action is being shown for the given tab.

This is an asynchronous function that returns a Promise.

Syntax

let gettingIsShown = browser.pageAction.isShown(
  details // object
)

Parameters

details

object. An object containing the tabId to check.

tabId

integer. ID of the tab to check.

Return value

A Promise that will be fulfilled with true if the extension's page action is being shown for the given tab, and false otherwise.

Browser compatibility

BCD tables only load in the browser

The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.

Examples

Check the state of the currently active tab:

async function shownInActiveTab() {
  let tabs = await browser.tabs.query({
    currentWindow:true,
    active: true
  });
  let shown = await browser.pageAction.isShown({
    tabId: tabs[0].id
  });
  console.log(shown);
}